There is general confusion about the appropriate reference for
the A14 spur between the last exit near Alconbury heading north and
the A1(M). Here is a summary of the issues as outlined on the
Wikipedia article:-
"The final 1.2 mile section of the A14 'spur' from the junction
with the
B1043 to the A1(M) at Alconbury has many inconsistent designations. The
scheme page on the Highways Agency website for work carried out in
1996-1998 refers to it as the A14(M)
[1]
however the map page linked from that page refers to the same section
of road as the A604(M).
[2]
The statutory instrument for the construction of the road in 1993
refers to it as the A604(M).
[3]
The A14(M)/A604(M) designation is not used on the ground; when heading
from the A14 spur onto the A1(M) heading north there a 'motorway' sign
just past the B1043 exit without any number of on (see photo in the top
right of this page)
[4]
however when heading south along the A1 it is signed as 'A14'.
[5]
Online mapping is also inconsistent - the Highway Agency mapping (which
uses
Navteq
data) refers to it as the 'A14(M)',
[6]
Bing maps (which also uses
Navteq
mapping) shows it as motorway without any designation
[7]
and
Yahoo maps (which uses Navteq data) shows it
as motorway and as the A1(M).
Google maps (which uses
TeleAtlas data) shows it as
a trunk road called A14.
[8]
